Institute: MPI für Physik     Collection: YB 2016     Display Documents

ID: 715983.0, MPI für Physik / YB 2016
Measurement of Time-Dependent $CP$ Violation in $B^0\\to \\eta'K^0$ Decays
Authors:
Date of Publication (YYYY-MM-DD):2014
Title of Journal:European Physical Journal H
Journal Abbrev.:Eur.Phys.J.H
Issue / Number:10
Start Page:165
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:We present a measurement of the time-dependent $CP$ violation parameters in $B^0\\to\\eta'K^0$ decays. The measurement is based on the full data sample containing $772\\times 10^6$ $B\\bar{B}$ pairs collected at the $\\Upsilon(4S)$ resonance using the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. The measured values of the mixing-induced and direct $CP$ violation parameters are: \\begin{align} \\sin 2 \\phi^{\\rm eff}_1 &= +0.68\\pm 0.07 \\pm 0.03, \\nonumber \\\\ \\mathcal{A}_{\\eta'K^0} &= +0.03\\pm 0.05\\pm 0.04, \\nonumber \\end{align} where the first uncertainty is statistical and the second is systematic. The values obtained are the most accurate to date. Furthermore, these results are consistent with our previous measurements and with the world-average value of $\\sin 2\\phi_1$ measured in $B^0\\to J/\\psi K^0$ decays.}
Classification / Thesaurus:Belle II
Comment of the Author/Creator:15 pages, 3 figures
External Publication Status:published
Document Type:Article
Communicated by:MPI für Physik
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